design-notes.md

For Corpus objects:

URN filtering

see notes on >, >=, <, <=, ~~ and ><

Containment hierarchy

• versions(u: CtsUrn): Set[CtsUrn]
• exemplars(u: CtsUrn): Set[CtsUrn]

URN Topology of passages

• define class RangeIndex (a: Int, b: Int)
• indexPoint returns an Integer for a leaf node CtsUrn
• indexRange returns a RangeIndex

Possible relations:

enum or the like with :

• equals
• precedes/follows
• contains/containedBy
• precedesAndOverlaps/overlapsAndPrecededBy
• overlapsAndFollows/overlapsAndFollowedBy

Urn-Urn pairings:

Point-Point can yield

• equals
• precedes/follows
• contains/containedBy

Point-Range can yield :

• equals
• precedes/follows
• contains/containedBy

Range-Range can yield:

• equals
• precedes/follows
• contains/containedBy
• precedesAndOverlaps/overlapsAndPrecededBy
• overlapsAndFollows/overlapsAndFollowedBy